ash: Rename LauncherAlignmentMenu to ShelfAlignmentMenu and move to shelf/ directory.

ash/shelf/shelf_alignment_menu.h

Index: ash/shelf/shelf_alignment_menu.h
diff --git a/ash/launcher/launcher_alignment_menu.h b/ash/shelf/shelf_alignment_menu.h
similarity index 79%
rename from ash/launcher/launcher_alignment_menu.h
rename to ash/shelf/shelf_alignment_menu.h
index f5e551f34cbaaf7bec87b2f49458652e4c09afb6..b213aa0dbcf4b11c3ddb3cd92092453435c8fb28 100644
--- a/ash/launcher/launcher_alignment_menu.h
+++ b/ash/shelf/shelf_alignment_menu.h
@@ -16,11 +16,11 @@ class RootWindow;
 namespace ash {
 
 // Submenu for choosing the alignment of the launcher.
-class ASH_EXPORT LauncherAlignmentMenu : public ui::SimpleMenuModel,
-                                         public ui::SimpleMenuModel::Delegate {
+class ASH_EXPORT ShelfAlignmentMenu : public ui::SimpleMenuModel,
+                                      public ui::SimpleMenuModel::Delegate {
  public:
-  explicit LauncherAlignmentMenu(aura::RootWindow* root);
-  virtual ~LauncherAlignmentMenu();
+  explicit ShelfAlignmentMenu(aura::RootWindow* root);
+  virtual ~ShelfAlignmentMenu();
 
   // ui::SimpleMenuModel::Delegate overrides:
   virtual bool IsCommandIdChecked(int command_id) const OVERRIDE;
@@ -40,7 +40,7 @@ class ASH_EXPORT LauncherAlignmentMenu : public ui::SimpleMenuModel,
 
   aura::RootWindow* root_window_;
 
-  DISALLOW_COPY_AND_ASSIGN(LauncherAlignmentMenu);
+  DISALLOW_COPY_AND_ASSIGN(ShelfAlignmentMenu);
 };
 
 }  // namespace ash